M is very close to crawling and starting on Sunday night her sleep has been worse than normal. She's been falling asleep fine, but she's been waking often for the past couple of nights with the first wakeup being around 8:30/9 which never happens. I can't even remember the last time before now that she woke so soon after going down for the night. We've been letting her CIO at each wakeup before 2am and she usually only cries for 5-10 minutes, but it's so sad!

She rocks back and forth on all fours in her crib while she cries...this is what leads me to believe maybe it has something to do with crawling? She's 8 1/2 months old.

Did your LO regress before learning to crawl? If so, did sleep go back to normal once he/she started crawling?